As long as your filling is already sweetened, you don't need to add any sugar. However, if you want to try the recipe with unsweetened pumpkin pureé, you'll want to add some sort of flavor enhancer.
Pumpkins are a nutritious plant with an array of health benefits. A ½ cup of canned, unsweetened pumpkin puree contains: 40 calories 10 grams carbohydrates 3 grams fiber 1 gram protein 0 gram ...